Ratnasari, Vita, 		Purhadi, Purhadi, 		Ismaini, Ismaini, AND 		Suhartono, Suhartono.
" Estimation and Statistical Test in Bivariate Binary Probit Model" <em>Jurnal ILMU DASAR</em> [Online], Volume 12 Number 1 (1 January 2012)